P · 13 seasons · 1979 – 1991 · B/T: R/R
Few careers score higher: Dan Petry sits 1st of 0 pitchers all-time in roto value, built over 13 seasons. 1985 was the high-water mark, worth +6.2, 34th that season and 3928th of 51,303 player-seasons on record. Career value accumulated in wins (+12.2) and strikeouts (+8.3), and drained away in WHIP (-2.1).
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1979 | DET | 15 | -2.29 | #466 | #87,119 |
| 1980 | DET | 27 | -2.29 | #501 | #86,710 |
| 1981 | DET | 23 | -2.26 | #504 | #83,137 |
| 1982 | DET | 35 | -2.23 | #491 | #80,431 |
| 1983 | DET | 38 | -2.26 | #494 | #83,824 |
| 1984 | DET | 35 | -2.28 | #520 | #85,750 |
| 1985 | DET | 34 | -2.24 | #482 | #81,373 |
| 1986 | DET | 20 | -2.31 | #503 | #89,072 |
| 1987 | DET | 30 | -2.28 | #490 | #85,085 |
| 1988 | CAL | 22 | -2.22 | #479 | #78,842 |
| 1989 | CAL | 19 | -2.25 | #520 | #82,600 |
| 1990 | DET | 32 | -2.19 | #504 | #76,022 |
| 1991★ | DET | 40 | -2.14 | #495 | #70,699 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1979 | DET | 15 | 0.17 | #149 | #17,701 |
| 1980 | DET | 27 | 0.22 | #142 | #17,466 |
| 1981 | DET | 23 | 4.65 | #43 | #6,017 |
| 1982 | DET | 35 | 5.13 | #36 | #5,270 |
| 1983 | DET | 38 | 3.73 | #59 | #7,631 |
| 1984 | DET | 35 | 6.13 | #29 | #3,986 |
| 1985★ | DET | 34 | 6.18 | #34 | #3,928 |
| 1986 | DET | 20 | -2.12 | #251 | #33,399 |
| 1987 | DET | 30 | -2.73 | #323 | #42,421 |
| 1988 | CAL | 22 | -2.33 | #303 | #36,564 |
| 1989 | CAL | 19 | -2.70 | #366 | #42,027 |
| 1990 | DET | 32 | -1.05 | #230 | #23,685 |
| 1991 | DET | 40 | -3.50 | #448 | #48,430 |
★ Best season by Z